Tom Morello's approach to guitar is unlike anyone else: he uses a simple rig — Les Paul, Marshall JCM800, Whammy pedal, and wah — but manipulates them in unconventional ways to create sounds that resemble turntables, synthesizers, and samples. On Killing in the Name, the core rhythm tone is a Les Paul through a cranked JCM800 for aggressive, tight palm-muted riffs. The Whammy and wah are used for the song's iconic solos and DJ-like scratching effects.
Tom Morello's tone broken down: the JCM800 gain structure, wah-as-filter technique, Whammy settings, and how to approximate it on a modeler or pedalboard.
Two Studio-line heads. Two of the most modified Marshall preamp topologies ever shipped. Which 20-watt version belongs on your board, and which one actually sounds like the amp it claims to copy.
Both are 20-watt small-format Marshalls with the original Marshall circuits inside, but a 1959 Plexi and an 800 are different amps. Here's which Studio you actually want.